fd.c revision 1.67.2.1
1 /* $NetBSD: fd.c,v 1.67.2.1 2000/02/07 19:44:34 he Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1993, 1994, 1995 Charles M. Hannum. 41 * Copyright (c) 1995 Paul Kranenburg. 42 * Copyright (c) 1990 The Regents of the University of California. 43 * All rights reserved. 44 * 45 * This code is derived from software contributed to Berkeley by 46 * Don Ahn. 47 * 48 * Redistribution and use in source and binary forms, with or without 49 * modification, are permitted provided that the following conditions 50 * are met: 51 * 1. Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 3. All advertising materials mentioning features or use of this software 57 * must display the following acknowledgement: 58 * This product includes software developed by the University of 59 * California, Berkeley and its contributors. 60 * 4. Neither the name of the University nor the names of its contributors 61 * may be used to endorse or promote products derived from this software 62 * without specific prior written permission. 63 * 64 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 65 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 66 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 67 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 68 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 69 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 70 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 71 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 72 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 73 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 74 * SUCH DAMAGE. 75 * 76 * @(#)fd.c 7.4 (Berkeley) 5/25/91 77 */ 78 79 #include "opt_ddb.h" 80 #include "opt_md.h" 81 82 #include <sys/param.h> 83 #include <sys/systm.h> 84 #include <sys/kernel.h> 85 #include <sys/file.h> 86 #include <sys/ioctl.h> 87 #include <sys/device.h> 88 #include <sys/disklabel.h> 89 #include <sys/dkstat.h> 90 #include <sys/disk.h> 91 #include <sys/fdio.h> 92 #include <sys/buf.h> 93 #include <sys/malloc.h> 94 #include <sys/proc.h> 95 #include <sys/uio.h> 96 #include <sys/stat.h> 97 #include <sys/syslog.h> 98 #include <sys/queue.h> 99 #include <sys/conf.h> 100 101 #include <dev/cons.h> 102 103 #include <vm/vm.h> 104 105 #include <uvm/uvm_extern.h> 106 107 #include <machine/cpu.h> 108 #include <machine/autoconf.h> 109 #include <machine/conf.h> 110 111 #include <sparc/sparc/auxreg.h> 112 #include <sparc/dev/fdreg.h> 113 #include <sparc/dev/fdvar.h> 114 115 #define FDUNIT(dev) (minor(dev) / 8) 116 #define FDTYPE(dev) (minor(dev) % 8) 117 118 /* XXX misuse a flag to identify format operation */ 119 #define B_FORMAT B_XXX 120 121 #define FD_DEBUG 122 #ifdef FD_DEBUG 123 int fdc_debug = 0; 124 #endif 125 126 enum fdc_state { 127 DEVIDLE = 0, 128 MOTORWAIT, /* 1 */ 129 DOSEEK, /* 2 */ 130 SEEKWAIT, /* 3 */ 131 SEEKTIMEDOUT, /* 4 */ 132 SEEKCOMPLETE, /* 5 */ 133 DOIO, /* 6 */ 134 IOCOMPLETE, /* 7 */ 135 IOTIMEDOUT, /* 8 */ 136 IOCLEANUPWAIT, /* 9 */ 137 IOCLEANUPTIMEDOUT,/*10 */ 138 DORESET, /* 11 */ 139 RESETCOMPLETE, /* 12 */ 140 RESETTIMEDOUT, /* 13 */ 141 DORECAL, /* 14 */ 142 RECALWAIT, /* 15 */ 143 RECALTIMEDOUT, /* 16 */ 144 RECALCOMPLETE, /* 17 */ 145 }; 146 147 /* software state, per controller */ 148 struct fdc_softc { 149 struct device sc_dev; /* boilerplate */ 150 bus_space_tag_t sc_bustag; 151 152 struct fd_softc *sc_fd[4]; /* pointers to children */ 153 TAILQ_HEAD(drivehead, fd_softc) sc_drives; 154 enum fdc_state sc_state; 155 int sc_flags; 156 #define FDC_82077 0x01 157 #define FDC_NEEDHEADSETTLE 0x02 158 #define FDC_EIS 0x04 159 #define FDC_NEEDMOTORWAIT 0x08 160 int sc_errors; /* number of retries so far */ 161 int sc_overruns; /* number of DMA overruns */ 162 int sc_cfg; /* current configuration */ 163 struct fdcio sc_io; 164 #define sc_handle sc_io.fdcio_handle 165 #define sc_reg_msr sc_io.fdcio_reg_msr 166 #define sc_reg_fifo sc_io.fdcio_reg_fifo 167 #define sc_reg_dor sc_io.fdcio_reg_dor 168 #define sc_reg_drs sc_io.fdcio_reg_msr 169 #define sc_itask sc_io.fdcio_itask 170 #define sc_istatus sc_io.fdcio_istatus 171 #define sc_data sc_io.fdcio_data 172 #define sc_tc sc_io.fdcio_tc 173 #define sc_nstat sc_io.fdcio_nstat 174 #define sc_status sc_io.fdcio_status 175 #define sc_intrcnt sc_io.fdcio_intrcnt 176 }; 177 178 #undef FDC_C_HANDLER 179 #ifndef FDC_C_HANDLER 180 extern struct fdcio *fdciop; 181 #endif 182 183 /* controller driver configuration */ 184 int fdcmatch_mainbus __P((struct device *, struct cfdata *, void *)); 185 int fdcmatch_obio __P((struct device *, struct cfdata *, void *)); 186 void fdcattach_mainbus __P((struct device *, struct device *, void *)); 187 void fdcattach_obio __P((struct device *, struct device *, void *)); 188 189 void fdcattach __P((struct fdc_softc *, int)); 190 191 struct cfattach fdc_mainbus_ca = { 192 sizeof(struct fdc_softc), fdcmatch_mainbus, fdcattach_mainbus 193 }; 194 struct cfattach fdc_obio_ca = { 195 sizeof(struct fdc_softc), fdcmatch_obio, fdcattach_obio 196 }; 197 198 __inline struct fd_type *fd_dev_to_type __P((struct fd_softc *, dev_t)); 199 200 /* 201 * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how 202 * we tell them apart. 203 */ 204 struct fd_type { 205 int sectrac; /* sectors per track */ 206 int heads; /* number of heads */ 207 int seccyl; /* sectors per cylinder */ 208 int secsize; /* size code for sectors */ 209 int datalen; /* data len when secsize = 0 */ 210 int steprate; /* step rate and head unload time */ 211 int gap1; /* gap len between sectors */ 212 int gap2; /* formatting gap */ 213 int cylinders; /* total num of cylinders */ 214 int size; /* size of disk in sectors */ 215 int step; /* steps per cylinder */ 216 int rate; /* transfer speed code */ 217 int fillbyte; /* format fill byte */ 218 int interleave; /* interleave factor (formatting) */ 219 char *name; 220 }; 221 222 /* The order of entries in the following table is important -- BEWARE! */ 223 struct fd_type fd_types[] = { 224 { 18,2,36,2,0xff,0xcf,0x1b,0x54,80,2880,1,FDC_500KBPS,0xf6,1, "1.44MB" }, /* 1.44MB diskette */ 225 { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_250KBPS,0xf6,1, "720KB" }, /* 3.5" 720kB diskette */ 226 { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_250KBPS,0xf6,1, "360KB/x" }, /* 360kB in 720kB drive */ 227 { 8,2,16,3,0xff,0xdf,0x35,0x74,77,1232,1,FDC_500KBPS,0xf6,1, "1.2MB/NEC" } /* 1.2 MB japanese format */ 228 }; 229 230 /* software state, per disk (with up to 4 disks per ctlr) */ 231 struct fd_softc { 232 struct device sc_dv; /* generic device info */ 233 struct disk sc_dk; /* generic disk info */ 234 235 struct fd_type *sc_deftype; /* default type descriptor */ 236 struct fd_type *sc_type; /* current type descriptor */ 237 238 daddr_t sc_blkno; /* starting block number */ 239 int sc_bcount; /* byte count left */ 240 int sc_skip; /* bytes already transferred */ 241 int sc_nblks; /* number of blocks currently tranferring */ 242 int sc_nbytes; /* number of bytes currently tranferring */ 243 244 int sc_drive; /* physical unit number */ 245 int sc_flags; 246 #define FD_OPEN 0x01 /* it's open */ 247 #define FD_MOTOR 0x02 /* motor should be on */ 248 #define FD_MOTOR_WAIT 0x04 /* motor coming up */ 249 int sc_cylin; /* where we think the head is */ 250 int sc_opts; /* user-set options */ 251 252 void *sc_sdhook; /* shutdownhook cookie */ 253 254 TAILQ_ENTRY(fd_softc) sc_drivechain; 255 int sc_ops; /* I/O ops since last switch */ 256 struct buf sc_q; /* pending I/O requests */ 257 }; 258 259 /* floppy driver configuration */ 260 int fdmatch __P((struct device *, struct cfdata *, void *)); 261 void fdattach __P((struct device *, struct device *, void *)); 262 263 struct cfattach fd_ca = { 264 sizeof(struct fd_softc), fdmatch, fdattach 265 }; 266 267 extern struct cfdriver fd_cd; 268 269 void fdgetdisklabel __P((dev_t)); 270 int fd_get_parms __P((struct fd_softc *)); 271 void fdstrategy __P((struct buf *)); 272 void fdstart __P((struct fd_softc *)); 273 int fdprint __P((void *, const char *)); 274 275 struct dkdriver fddkdriver = { fdstrategy }; 276 277 struct fd_type *fd_nvtotype __P((char *, int, int)); 278 void fd_set_motor __P((struct fdc_softc *fdc)); 279 void fd_motor_off __P((void *arg)); 280 void fd_motor_on __P((void *arg)); 281 int fdcresult __P((struct fdc_softc *fdc)); 282 int fdc_wrfifo __P((struct fdc_softc *fdc, u_char x)); 283 void fdcstart __P((struct fdc_softc *fdc)); 284 void fdcstatus __P((struct fdc_softc *fdc, char *s)); 285 void fdc_reset __P((struct fdc_softc *fdc)); 286 void fdctimeout __P((void *arg)); 287 void fdcpseudointr __P((void *arg)); 288 #ifdef FDC_C_HANDLER 289 int fdc_c_hwintr __P((void *)); 290 #else 291 void fdchwintr __P((void)); 292 #endif 293 int fdcswintr __P((void *)); 294 int fdcstate __P((struct fdc_softc *)); 295 void fdcretry __P((struct fdc_softc *fdc)); 296 void fdfinish __P((struct fd_softc *fd, struct buf *bp)); 297 int fdformat __P((dev_t, struct ne7_fd_formb *, struct proc *)); 298 void fd_do_eject __P((struct fd_softc *)); 299 void fd_mountroot_hook __P((struct device *)); 300 static int fdconf __P((struct fdc_softc *)); 301 static void establish_chip_type __P(( 302 struct fdc_softc *, 303 bus_space_tag_t, 304 bus_type_t, 305 bus_addr_t, 306 bus_size_t, 307 bus_space_handle_t)); 308 309 310 #if PIL_FDSOFT == 4 311 #define IE_FDSOFT IE_L4 312 #else 313 #error 4 314 #endif 315 316 #ifdef FDC_C_HANDLER 317 #if defined(SUN4M) 318 #define FD_SET_SWINTR do { \ 319 if (CPU_ISSUN4M) \ 320 raise(0, PIL_FDSOFT); \ 321 else \ 322 ienab_bis(IE_L4); \ 323 } while(0) 324 #else 325 #define FD_SET_SWINTR ienab_bis(IE_FDSOFT) 326 #endif /* defined(SUN4M) */ 327 #endif /* FDC_C_HANDLER */ 328 329 #define OBP_FDNAME (CPU_ISSUN4M ? "SUNW,fdtwo" : "fd") 330 331 int 332 fdcmatch_mainbus(parent, match, aux) 333 struct device *parent; 334 struct cfdata *match; 335 void *aux; 336 { 337 struct mainbus_attach_args *ma = aux; 338 339 /* 340 * Floppy controller is on mainbus on sun4c. 341 */ 342 if (!CPU_ISSUN4C) 343 return (0); 344 345 /* sun4c PROMs call the controller "fd" */ 346 if (strcmp("fd", ma->ma_name) != 0) 347 return (0); 348 349 return (bus_space_probe(ma->ma_bustag, 350 ma->ma_iospace, 351 ma->ma_paddr, 352 1, /* probe size */ 353 0, /* offset */ 354 0, /* flags */ 355 NULL, NULL)); 356 } 357 358 int 359 fdcmatch_obio(parent, match, aux) 360 struct device *parent; 361 struct cfdata *match; 362 void *aux; 363 { 364 union obio_attach_args *uoba = aux; 365 struct sbus_attach_args *sa; 366 367 /* 368 * Floppy controller is on obio on sun4m. 369 */ 370 if (uoba->uoba_isobio4 != 0) 371 return (0); 372 373 sa = &uoba->uoba_sbus; 374 375 /* sun4m PROMs call the controller "SUNW,fdtwo" */ 376 if (strcmp("SUNW,fdtwo", sa->sa_name) != 0) 377 return (0); 378 379 return (bus_space_probe(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 380 1, /* probe size */ 381 0, /* offset */ 382 0, /* flags */ 383 NULL, NULL)); 384 } 385 386 static void 387 establish_chip_type(fdc, tag, type, addr, size, handle) 388 struct fdc_softc *fdc; 389 bus_space_tag_t tag; 390 bus_type_t type; 391 bus_addr_t addr; 392 bus_size_t size; 393 bus_space_handle_t handle; 394 { 395 u_int8_t v; 396 397 /* 398 * This hack from Chris Torek: apparently DOR really 399 * addresses MSR/DRS on a 82072. 400 * We used to rely on the VERSION command to tell the 401 * difference (which did not work). 402 */ 403 404 /* First, check the size of the register bank */ 405 if (size < 8) 406 /* It isn't a 82077 */ 407 return; 408 409 /* Then probe the DOR register offset */ 410 if (bus_space_probe(tag, type, addr, 411 1, /* probe size */ 412 FDREG77_DOR, /* offset */ 413 0, /* flags */ 414 NULL, NULL) == 0) { 415 416 /* It isn't a 82077 */ 417 return; 418 } 419 420 v = bus_space_read_1(tag, handle, FDREG77_DOR); 421 if (v == NE7_RQM) { 422 /* 423 * Value in DOR looks like it's really MSR 424 */ 425 bus_space_write_1(tag, handle, FDREG77_DOR, FDC_250KBPS); 426 v = bus_space_read_1(tag, handle, FDREG77_DOR); 427 if (v == NE7_RQM) { 428 /* 429 * The value in the DOR didn't stick; 430 * it isn't a 82077 431 */ 432 return; 433 } 434 } 435 436 fdc->sc_flags |= FDC_82077; 437 } 438 439 /* 440 * Arguments passed between fdcattach and fdprobe. 441 */ 442 struct fdc_attach_args { 443 int fa_drive; 444 struct fd_type *fa_deftype; 445 }; 446 447 /* 448 * Print the location of a disk drive (called just before attaching the 449 * the drive). If `fdc' is not NULL, the drive was found but was not 450 * in the system config file; print the drive name as well. 451 * Return QUIET (config_find ignores this if the device was configured) to 452 * avoid printing `fdN not configured' messages. 453 */ 454 int 455 fdprint(aux, fdc) 456 void *aux; 457 const char *fdc; 458 { 459 register struct fdc_attach_args *fa = aux; 460 461 if (!fdc) 462 printf(" drive %d", fa->fa_drive); 463 return (QUIET); 464 } 465 466 /* 467 * Configure several parameters and features on the FDC. 468 * Return 0 on success. 469 */ 470 static int 471 fdconf(fdc) 472 struct fdc_softc *fdc; 473 { 474 int vroom; 475 476 if (fdc_wrfifo(fdc, NE7CMD_DUMPREG) || fdcresult(fdc) != 10) 477 return (-1); 478 479 /* 480 * dumpreg[7] seems to be a motor-off timeout; set it to whatever 481 * the PROM thinks is appropriate. 482 */ 483 if ((vroom = fdc->sc_status[7]) == 0) 484 vroom = 0x64; 485 486 /* Configure controller to use FIFO and Implied Seek */ 487 if (fdc_wrfifo(fdc, NE7CMD_CFG) != 0) 488 return (-1); 489 if (fdc_wrfifo(fdc, vroom) != 0) 490 return (-1); 491 if (fdc_wrfifo(fdc, fdc->sc_cfg) != 0) 492 return (-1); 493 if (fdc_wrfifo(fdc, 0) != 0) /* PRETRK */ 494 return (-1); 495 /* No result phase for the NE7CMD_CFG command */ 496 497 if ((fdc->sc_flags & FDC_82077) != 0) { 498 /* Lock configuration across soft resets. */ 499 if (fdc_wrfifo(fdc, NE7CMD_LOCK | CFG_LOCK) != 0 || 500 fdcresult(fdc) != 1) { 501 #ifdef DEBUG 502 printf("fdconf: CFGLOCK failed"); 503 #endif 504 return (-1); 505 } 506 } 507 508 return (0); 509 #if 0 510 if (fdc_wrfifo(fdc, NE7CMD_VERSION) == 0 && 511 fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x90) { 512 if (fdc_debug) 513 printf("[version cmd]"); 514 } 515 #endif 516 } 517 518 void 519 fdcattach_mainbus(parent, self, aux) 520 struct device *parent, *self; 521 void *aux; 522 { 523 struct fdc_softc *fdc = (void *)self; 524 struct mainbus_attach_args *ma = aux; 525 526 fdc->sc_bustag = ma->ma_bustag; 527 528 if (bus_space_map2( 529 ma->ma_bustag, 530 ma->ma_iospace, 531 ma->ma_paddr, 532 ma->ma_size, 533 BUS_SPACE_MAP_LINEAR, 534 0, 535 &fdc->sc_handle) != 0) { 536 printf("%s: cannot map registers\n", self->dv_xname); 537 return; 538 } 539 540 establish_chip_type(fdc, 541 ma->ma_bustag, 542 ma->ma_iospace, 543 ma->ma_paddr, 544 ma->ma_size, 545 fdc->sc_handle); 546 547 fdcattach(fdc, ma->ma_pri); 548 } 549 550 void 551 fdcattach_obio(parent, self, aux) 552 struct device *parent, *self; 553 void *aux; 554 { 555 struct fdc_softc *fdc = (void *)self; 556 union obio_attach_args *uoba = aux; 557 struct sbus_attach_args *sa = &uoba->uoba_sbus; 558 559 fdc->sc_bustag = sa->sa_bustag; 560 561 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, 562 sa->sa_offset, 563 sa->sa_size, 564 BUS_SPACE_MAP_LINEAR, 565 0, 566 &fdc->sc_handle) != 0) { 567 printf("%s: cannot map control registers\n", 568 self->dv_xname); 569 return; 570 } 571 572 establish_chip_type(fdc, 573 sa->sa_bustag, 574 sa->sa_slot, 575 sa->sa_offset, 576 sa->sa_size, 577 fdc->sc_handle); 578 579 if (strcmp(getpropstring(sa->sa_node, "status"), "disabled") == 0) { 580 printf(": no drives attached\n"); 581 return; 582 } 583 584 if (sa->sa_nintr != 0) 585 fdcattach(fdc, sa->sa_pri); 586 } 587 588 void 589 fdcattach(fdc, pri) 590 struct fdc_softc *fdc; 591 int pri; 592 { 593 struct fdc_attach_args fa; 594 char code; 595 596 fdc->sc_state = DEVIDLE; 597 fdc->sc_itask = FDC_ITASK_NONE; 598 fdc->sc_istatus = FDC_ISTATUS_NONE; 599 fdc->sc_flags |= FDC_EIS; 600 TAILQ_INIT(&fdc->sc_drives); 601 602 if ((fdc->sc_flags & FDC_82077) != 0) { 603 fdc->sc_reg_msr = FDREG77_MSR; 604 fdc->sc_reg_fifo = FDREG77_FIFO; 605 fdc->sc_reg_dor = FDREG77_DOR; 606 code = '7'; 607 fdc->sc_flags |= FDC_NEEDMOTORWAIT; 608 } else { 609 fdc->sc_reg_msr = FDREG72_MSR; 610 fdc->sc_reg_fifo = FDREG72_FIFO; 611 fdc->sc_reg_dor = 0; 612 code = '2'; 613 } 614 615 printf(" softpri %d: chip 8207%c\n", PIL_FDSOFT, code); 616 617 /* 618 * Configure controller; enable FIFO, Implied seek, no POLL mode?. 619 * Note: CFG_EFIFO is active-low, initial threshold value: 8 620 */ 621 fdc->sc_cfg = CFG_EIS|/*CFG_EFIFO|*/CFG_POLL|(8 & CFG_THRHLD_MASK); 622 if (fdconf(fdc) != 0) { 623 printf("%s: no drives attached\n", fdc->sc_dev.dv_xname); 624 return; 625 } 626 627 #ifdef FDC_C_HANDLER 628 (void)bus_intr_establish(fdc->sc_bustag, pri, 0, 629 fdc_c_hwintr, fdc); 630 #else 631 fdciop = &fdc->sc_io; 632 (void)bus_intr_establish(fdc->sc_bustag, pri, 633 BUS_INTR_ESTABLISH_FASTTRAP, 634 (int (*) __P((void *)))fdchwintr, NULL); 635 #endif 636 (void)bus_intr_establish(fdc->sc_bustag, PIL_FDSOFT, 637 BUS_INTR_ESTABLISH_SOFTINTR, 638 fdcswintr, fdc); 639 640 evcnt_attach(&fdc->sc_dev, "intr", &fdc->sc_intrcnt); 641 642 /* physical limit: four drives per controller. */ 643 for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { 644 fa.fa_deftype = NULL; /* unknown */ 645 fa.fa_deftype = &fd_types[0]; /* XXX */ 646 (void)config_found(&fdc->sc_dev, (void *)&fa, fdprint); 647 } 648 } 649 650 int 651 fdmatch(parent, match, aux) 652 struct device *parent; 653 struct cfdata *match; 654 void *aux; 655 { 656 struct fdc_softc *fdc = (void *)parent; 657 bus_space_tag_t t = fdc->sc_bustag; 658 bus_space_handle_t h = fdc->sc_handle; 659 struct fdc_attach_args *fa = aux; 660 int drive = fa->fa_drive; 661 int n, ok; 662 663 if (drive > 0) 664 /* XXX - for now, punt on more than one drive */ 665 return (0); 666 667 if ((fdc->sc_flags & FDC_82077) != 0) { 668 /* select drive and turn on motor */ 669 bus_space_write_1(t, h, fdc->sc_reg_dor, 670 drive | FDO_FRST | FDO_MOEN(drive)); 671 /* wait for motor to spin up */ 672 delay(250000); 673 } else { 674 auxregbisc(AUXIO4C_FDS, 0); 675 } 676 fdc->sc_nstat = 0; 677 fdc_wrfifo(fdc, NE7CMD_RECAL); 678 fdc_wrfifo(fdc, drive); 679 680 /* Wait for recalibration to complete */ 681 for (n = 0; n < 10000; n++) { 682 u_int8_t v; 683 684 delay(1000); 685 v = bus_space_read_1(t, h, fdc->sc_reg_msr); 686 if ((v & (NE7_RQM|NE7_DIO|NE7_CB)) == NE7_RQM) { 687 /* wait a bit longer till device *really* is ready */ 688 delay(100000); 689 if (fdc_wrfifo(fdc, NE7CMD_SENSEI)) 690 break; 691 if (fdcresult(fdc) == 1 && fdc->sc_status[0] == 0x80) 692 /* 693 * Got `invalid command'; we interpret it 694 * to mean that the re-calibrate hasn't in 695 * fact finished yet 696 */ 697 continue; 698 break; 699 } 700 } 701 n = fdc->sc_nstat; 702 #ifdef FD_DEBUG 703 if (fdc_debug) { 704 int i; 705 printf("fdprobe: %d stati:", n); 706 for (i = 0; i < n; i++) 707 printf(" 0x%x", fdc->sc_status[i]); 708 printf("\n"); 709 } 710 #endif 711 ok = (n == 2 && (fdc->sc_status[0] & 0xf8) == 0x20) ? 1 : 0; 712 713 /* turn off motor */ 714 if ((fdc->sc_flags & FDC_82077) != 0) { 715 /* deselect drive and turn motor off */ 716 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 717 } else { 718 auxregbisc(0, AUXIO4C_FDS); 719 } 720 721 return (ok); 722 } 723 724 /* 725 * Controller is working, and drive responded. Attach it. 726 */ 727 void 728 fdattach(parent, self, aux) 729 struct device *parent, *self; 730 void *aux; 731 { 732 struct fdc_softc *fdc = (void *)parent; 733 struct fd_softc *fd = (void *)self; 734 struct fdc_attach_args *fa = aux; 735 struct fd_type *type = fa->fa_deftype; 736 int drive = fa->fa_drive; 737 738 /* XXX Allow `flags' to override device type? */ 739 740 if (type) 741 printf(": %s %d cyl, %d head, %d sec\n", type->name, 742 type->cylinders, type->heads, type->sectrac); 743 else 744 printf(": density unknown\n"); 745 746 fd->sc_cylin = -1; 747 fd->sc_drive = drive; 748 fd->sc_deftype = type; 749 fdc->sc_fd[drive] = fd; 750 751 fdc_wrfifo(fdc, NE7CMD_SPECIFY); 752 fdc_wrfifo(fdc, type->steprate); 753 /* XXX head load time == 6ms */ 754 fdc_wrfifo(fdc, 6 | NE7_SPECIFY_NODMA); 755 756 /* 757 * Initialize and attach the disk structure. 758 */ 759 fd->sc_dk.dk_name = fd->sc_dv.dv_xname; 760 fd->sc_dk.dk_driver = &fddkdriver; 761 disk_attach(&fd->sc_dk); 762 763 /* 764 * Establish a mountroot_hook anyway in case we booted 765 * with RB_ASKNAME and get selected as the boot device. 766 */ 767 mountroothook_establish(fd_mountroot_hook, &fd->sc_dv); 768 769 /* Make sure the drive motor gets turned off at shutdown time. */ 770 fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); 771 772 /* XXX Need to do some more fiddling with sc_dk. */ 773 dk_establish(&fd->sc_dk, &fd->sc_dv); 774 } 775 776 __inline struct fd_type * 777 fd_dev_to_type(fd, dev) 778 struct fd_softc *fd; 779 dev_t dev; 780 { 781 int type = FDTYPE(dev); 782 783 if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) 784 return (NULL); 785 return (type ? &fd_types[type - 1] : fd->sc_deftype); 786 } 787 788 void 789 fdstrategy(bp) 790 register struct buf *bp; /* IO operation to perform */ 791 { 792 struct fd_softc *fd; 793 int unit = FDUNIT(bp->b_dev); 794 int sz; 795 int s; 796 797 /* Valid unit, controller, and request? */ 798 if (unit >= fd_cd.cd_ndevs || 799 (fd = fd_cd.cd_devs[unit]) == 0 || 800 bp->b_blkno < 0 || 801 (((bp->b_bcount % FD_BSIZE(fd)) != 0 || 802 (bp->b_blkno * DEV_BSIZE) % FD_BSIZE(fd) != 0) && 803 (bp->b_flags & B_FORMAT) == 0)) { 804 bp->b_error = EINVAL; 805 goto bad; 806 } 807 808 /* If it's a null transfer, return immediately. */ 809 if (bp->b_bcount == 0) 810 goto done; 811 812 sz = howmany(bp->b_bcount, DEV_BSIZE); 813 814 if (bp->b_blkno + sz > (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd)) { 815 sz = (fd->sc_type->size * DEV_BSIZE) / FD_BSIZE(fd) 816 - bp->b_blkno; 817 if (sz == 0) { 818 /* If exactly at end of disk, return EOF. */ 819 bp->b_resid = bp->b_bcount; 820 goto done; 821 } 822 if (sz < 0) { 823 /* If past end of disk, return EINVAL. */ 824 bp->b_error = EINVAL; 825 goto bad; 826 } 827 /* Otherwise, truncate request. */ 828 bp->b_bcount = sz << DEV_BSHIFT; 829 } 830 831 bp->b_cylinder = (bp->b_blkno * DEV_BSIZE) / 832 (FD_BSIZE(fd) * fd->sc_type->seccyl); 833 834 #ifdef FD_DEBUG 835 if (fdc_debug > 1) 836 printf("fdstrategy: b_blkno %d b_bcount %ld blkno %d cylin %ld\n", 837 bp->b_blkno, bp->b_bcount, fd->sc_blkno, bp->b_cylinder); 838 #endif 839 840 /* Queue transfer on drive, activate drive and controller if idle. */ 841 s = splbio(); 842 disksort(&fd->sc_q, bp); 843 untimeout(fd_motor_off, fd); /* a good idea */ 844 if (fd->sc_q.b_active == 0) 845 fdstart(fd); 846 #ifdef DIAGNOSTIC 847 else { 848 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 849 if (fdc->sc_state == DEVIDLE) { 850 printf("fdstrategy: controller inactive\n"); 851 fdcstart(fdc); 852 } 853 } 854 #endif 855 splx(s); 856 return; 857 858 bad: 859 bp->b_flags |= B_ERROR; 860 done: 861 /* Toss transfer; we're done early. */ 862 biodone(bp); 863 } 864 865 void 866 fdstart(fd) 867 struct fd_softc *fd; 868 { 869 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 870 int active = fdc->sc_drives.tqh_first != 0; 871 872 /* Link into controller queue. */ 873 fd->sc_q.b_active = 1; 874 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 875 876 /* If controller not already active, start it. */ 877 if (!active) 878 fdcstart(fdc); 879 } 880 881 void 882 fdfinish(fd, bp) 883 struct fd_softc *fd; 884 struct buf *bp; 885 { 886 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 887 888 /* 889 * Move this drive to the end of the queue to give others a `fair' 890 * chance. We only force a switch if N operations are completed while 891 * another drive is waiting to be serviced, since there is a long motor 892 * startup delay whenever we switch. 893 */ 894 if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { 895 fd->sc_ops = 0; 896 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 897 if (bp->b_actf != NULL) { 898 TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); 899 } else 900 fd->sc_q.b_active = 0; 901 } 902 bp->b_resid = fd->sc_bcount; 903 fd->sc_skip = 0; 904 fd->sc_q.b_actf = bp->b_actf; 905 906 biodone(bp); 907 /* turn off motor 5s from now */ 908 timeout(fd_motor_off, fd, 5 * hz); 909 fdc->sc_state = DEVIDLE; 910 } 911 912 void 913 fdc_reset(fdc) 914 struct fdc_softc *fdc; 915 { 916 bus_space_tag_t t = fdc->sc_bustag; 917 bus_space_handle_t h = fdc->sc_handle; 918 919 if ((fdc->sc_flags & FDC_82077) != 0) { 920 bus_space_write_1(t, h, fdc->sc_reg_dor, 921 FDO_FDMAEN | FDO_MOEN(0)); 922 } 923 924 bus_space_write_1(t, h, fdc->sc_reg_drs, DRS_RESET); 925 delay(10); 926 bus_space_write_1(t, h, fdc->sc_reg_drs, 0); 927 928 if ((fdc->sc_flags & FDC_82077) != 0) { 929 bus_space_write_1(t, h, fdc->sc_reg_dor, 930 FDO_FRST | FDO_FDMAEN | FDO_DS); 931 } 932 #ifdef FD_DEBUG 933 if (fdc_debug) 934 printf("fdc reset\n"); 935 #endif 936 } 937 938 void 939 fd_set_motor(fdc) 940 struct fdc_softc *fdc; 941 { 942 struct fd_softc *fd; 943 u_char status; 944 int n; 945 946 if ((fdc->sc_flags & FDC_82077) != 0) { 947 status = FDO_FRST | FDO_FDMAEN; 948 if ((fd = fdc->sc_drives.tqh_first) != NULL) 949 status |= fd->sc_drive; 950 951 for (n = 0; n < 4; n++) 952 if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) 953 status |= FDO_MOEN(n); 954 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 955 fdc->sc_reg_dor, status); 956 } else { 957 958 for (n = 0; n < 4; n++) { 959 if ((fd = fdc->sc_fd[n]) != NULL && 960 (fd->sc_flags & FD_MOTOR) != 0) { 961 auxregbisc(AUXIO4C_FDS, 0); 962 return; 963 } 964 } 965 auxregbisc(0, AUXIO4C_FDS); 966 } 967 } 968 969 void 970 fd_motor_off(arg) 971 void *arg; 972 { 973 struct fd_softc *fd = arg; 974 int s; 975 976 s = splbio(); 977 fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 978 fd_set_motor((struct fdc_softc *)fd->sc_dv.dv_parent); 979 splx(s); 980 } 981 982 void 983 fd_motor_on(arg) 984 void *arg; 985 { 986 struct fd_softc *fd = arg; 987 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 988 int s; 989 990 s = splbio(); 991 fd->sc_flags &= ~FD_MOTOR_WAIT; 992 if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) 993 (void) fdcstate(fdc); 994 splx(s); 995 } 996 997 /* 998 * Get status bytes off the FDC after a command has finished 999 * Returns the number of status bytes read; -1 on error. 1000 * The return value is also stored in `sc_nstat'. 1001 */ 1002 int 1003 fdcresult(fdc) 1004 struct fdc_softc *fdc; 1005 { 1006 bus_space_tag_t t = fdc->sc_bustag; 1007 bus_space_handle_t h = fdc->sc_handle; 1008 int j, n = 0; 1009 1010 for (j = 10000; j; j--) { 1011 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1012 v &= (NE7_DIO | NE7_RQM | NE7_CB); 1013 if (v == NE7_RQM) 1014 return (fdc->sc_nstat = n); 1015 if (v == (NE7_DIO | NE7_RQM | NE7_CB)) { 1016 if (n >= sizeof(fdc->sc_status)) { 1017 log(LOG_ERR, "fdcresult: overrun\n"); 1018 return (-1); 1019 } 1020 fdc->sc_status[n++] = 1021 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1022 } else 1023 delay(1); 1024 } 1025 1026 log(LOG_ERR, "fdcresult: timeout\n"); 1027 return (fdc->sc_nstat = -1); 1028 } 1029 1030 /* 1031 * Write a command byte to the FDC. 1032 * Returns 0 on success; -1 on failure (i.e. timeout) 1033 */ 1034 int 1035 fdc_wrfifo(fdc, x) 1036 struct fdc_softc *fdc; 1037 u_int8_t x; 1038 { 1039 bus_space_tag_t t = fdc->sc_bustag; 1040 bus_space_handle_t h = fdc->sc_handle; 1041 int i; 1042 1043 for (i = 100000; i-- > 0;) { 1044 u_int8_t v = bus_space_read_1(t, h, fdc->sc_reg_msr); 1045 if ((v & (NE7_DIO|NE7_RQM)) == NE7_RQM) { 1046 /* The chip is ready */ 1047 bus_space_write_1(t, h, fdc->sc_reg_fifo, x); 1048 return (0); 1049 } 1050 delay(1); 1051 } 1052 return (-1); 1053 } 1054 1055 int 1056 fdopen(dev, flags, fmt, p) 1057 dev_t dev; 1058 int flags, fmt; 1059 struct proc *p; 1060 { 1061 int unit, pmask; 1062 struct fd_softc *fd; 1063 struct fd_type *type; 1064 1065 unit = FDUNIT(dev); 1066 if (unit >= fd_cd.cd_ndevs) 1067 return (ENXIO); 1068 fd = fd_cd.cd_devs[unit]; 1069 if (fd == NULL) 1070 return (ENXIO); 1071 type = fd_dev_to_type(fd, dev); 1072 if (type == NULL) 1073 return (ENXIO); 1074 1075 if ((fd->sc_flags & FD_OPEN) != 0 && 1076 fd->sc_type != type) 1077 return (EBUSY); 1078 1079 fd->sc_type = type; 1080 fd->sc_cylin = -1; 1081 fd->sc_flags |= FD_OPEN; 1082 1083 /* 1084 * Only update the disklabel if we're not open anywhere else. 1085 */ 1086 if (fd->sc_dk.dk_openmask == 0) 1087 fdgetdisklabel(dev); 1088 1089 pmask = (1 << DISKPART(dev)); 1090 1091 switch (fmt) { 1092 case S_IFCHR: 1093 fd->sc_dk.dk_copenmask |= pmask; 1094 break; 1095 1096 case S_IFBLK: 1097 fd->sc_dk.dk_bopenmask |= pmask; 1098 break; 1099 } 1100 fd->sc_dk.dk_openmask = 1101 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1102 1103 return (0); 1104 } 1105 1106 int 1107 fdclose(dev, flags, fmt, p) 1108 dev_t dev; 1109 int flags, fmt; 1110 struct proc *p; 1111 { 1112 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 1113 int pmask = (1 << DISKPART(dev)); 1114 1115 fd->sc_flags &= ~FD_OPEN; 1116 fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); 1117 1118 switch (fmt) { 1119 case S_IFCHR: 1120 fd->sc_dk.dk_copenmask &= ~pmask; 1121 break; 1122 1123 case S_IFBLK: 1124 fd->sc_dk.dk_bopenmask &= ~pmask; 1125 break; 1126 } 1127 fd->sc_dk.dk_openmask = 1128 fd->sc_dk.dk_copenmask | fd->sc_dk.dk_bopenmask; 1129 1130 return (0); 1131 } 1132 1133 int 1134 fdread(dev, uio, flag) 1135 dev_t dev; 1136 struct uio *uio; 1137 int flag; 1138 { 1139 1140 return (physio(fdstrategy, NULL, dev, B_READ, minphys, uio)); 1141 } 1142 1143 int 1144 fdwrite(dev, uio, flag) 1145 dev_t dev; 1146 struct uio *uio; 1147 int flag; 1148 { 1149 1150 return (physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1151 } 1152 1153 void 1154 fdcstart(fdc) 1155 struct fdc_softc *fdc; 1156 { 1157 1158 #ifdef DIAGNOSTIC 1159 /* only got here if controller's drive queue was inactive; should 1160 be in idle state */ 1161 if (fdc->sc_state != DEVIDLE) { 1162 printf("fdcstart: not idle\n"); 1163 return; 1164 } 1165 #endif 1166 (void) fdcstate(fdc); 1167 } 1168 1169 void 1170 fdcstatus(fdc, s) 1171 struct fdc_softc *fdc; 1172 char *s; 1173 { 1174 struct fd_softc *fd = fdc->sc_drives.tqh_first; 1175 int n; 1176 char bits[64]; 1177 1178 /* Just print last status */ 1179 n = fdc->sc_nstat; 1180 1181 #if 0 1182 /* 1183 * A 82072 seems to return <invalid command> on 1184 * gratuitous Sense Interrupt commands. 1185 */ 1186 if (n == 0 && (fdc->sc_flags & FDC_82077) != 0) { 1187 fdc_wrfifo(fdc, NE7CMD_SENSEI); 1188 (void) fdcresult(fdc); 1189 n = 2; 1190 } 1191 #endif 1192 1193 printf("%s: %s: state %d", 1194 fd ? fd->sc_dv.dv_xname : "fdc", s, fdc->sc_state); 1195 1196 switch (n) { 1197 case 0: 1198 printf("\n"); 1199 break; 1200 case 2: 1201 printf(" (st0 %s cyl %d)\n", 1202 bitmask_snprintf(fdc->sc_status[0], NE7_ST0BITS, 1203 bits, sizeof(bits)), fdc->sc_status[1]); 1204 break; 1205 case 7: 1206 printf(" (st0 %s", bitmask_snprintf(fdc->sc_status[0], 1207 NE7_ST0BITS, bits, sizeof(bits))); 1208 printf(" st1 %s", bitmask_snprintf(fdc->sc_status[1], 1209 NE7_ST1BITS, bits, sizeof(bits))); 1210 printf(" st2 %s", bitmask_snprintf(fdc->sc_status[2], 1211 NE7_ST2BITS, bits, sizeof(bits))); 1212 printf(" cyl %d head %d sec %d)\n", 1213 fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); 1214 break; 1215 #ifdef DIAGNOSTIC 1216 default: 1217 printf(" fdcstatus: weird size: %d\n", n); 1218 break; 1219 #endif 1220 } 1221 } 1222 1223 void 1224 fdctimeout(arg) 1225 void *arg; 1226 { 1227 struct fdc_softc *fdc = arg; 1228 struct fd_softc *fd; 1229 int s; 1230 1231 s = splbio(); 1232 fd = fdc->sc_drives.tqh_first; 1233 if (fd == NULL) { 1234 printf("%s: timeout but no I/O pending: state %d, istatus=%d\n", 1235 fdc->sc_dev.dv_xname, 1236 fdc->sc_state, fdc->sc_istatus); 1237 fdc->sc_state = DEVIDLE; 1238 goto out; 1239 } 1240 1241 if (fd->sc_q.b_actf != NULL) 1242 fdc->sc_state++; 1243 else 1244 fdc->sc_state = DEVIDLE; 1245 1246 (void) fdcstate(fdc); 1247 out: 1248 splx(s); 1249 1250 } 1251 1252 void 1253 fdcpseudointr(arg) 1254 void *arg; 1255 { 1256 struct fdc_softc *fdc = arg; 1257 int s; 1258 1259 /* Just ensure it has the right spl. */ 1260 s = splbio(); 1261 (void) fdcstate(fdc); 1262 splx(s); 1263 } 1264 1265 1266 #ifdef FDC_C_HANDLER 1267 /* 1268 * hardware interrupt entry point: must be converted to `fast' 1269 * (in-window) handler. 1270 */ 1271 int 1272 fdc_c_hwintr(arg) 1273 void *arg; 1274 { 1275 struct fdc_softc *fdc = arg; 1276 bus_space_tag_t t = fdc->sc_bustag; 1277 bus_space_handle_t h = fdc->sc_handle; 1278 1279 switch (fdc->sc_itask) { 1280 case FDC_ITASK_NONE: 1281 return (0); 1282 case FDC_ITASK_SENSI: 1283 if (fdc_wrfifo(fdc, NE7CMD_SENSEI) != 0 || fdcresult(fdc) != 0) 1284 fdc->sc_istatus = FDC_ISTATUS_ERROR; 1285 else 1286 fdc->sc_istatus = FDC_ISTATUS_DONE; 1287 FD_SET_SWINTR; 1288 return (1); 1289 case FDC_ITASK_DMA: 1290 /* Proceed with pseudo-dma below */ 1291 break; 1292 default: 1293 printf("fdc: stray hard interrupt: itask=%d\n", fdc->sc_itask); 1294 fdc->sc_istatus = FDC_ISTATUS_SPURIOUS; 1295 FD_SET_SWINTR; 1296 return (1); 1297 } 1298 1299 /* 1300 * Pseudo DMA in progress 1301 */ 1302 for (;;) { 1303 u_int8_t msr; 1304 1305 msr = bus_space_read_1(t, h, fdc->sc_reg_msr); 1306 1307 if ((msr & NE7_RQM) == 0) 1308 /* That's all this round */ 1309 break; 1310 1311 if ((msr & NE7_NDM) == 0) { 1312 fdcresult(fdc); 1313 fdc->sc_istatus = FDC_ISTATUS_DONE; 1314 FD_SET_SWINTR; 1315 printf("fdc: overrun: tc = %d\n", fdc->sc_tc); 1316 break; 1317 } 1318 1319 /* Another byte can be transferred */ 1320 if ((msr & NE7_DIO) != 0) 1321 *fdc->sc_data = 1322 bus_space_read_1(t, h, fdc->sc_reg_fifo); 1323 else 1324 bus_space_write_1(t, h, fdc->sc_reg_fifo, 1325 *fdc->sc_data); 1326 1327 fdc->sc_data++; 1328 if (--fdc->sc_tc == 0) { 1329 fdc->sc_istatus = FDC_ISTATUS_DONE; 1330 FTC_FLIP; 1331 fdcresult(fdc); 1332 FD_SET_SWINTR; 1333 break; 1334 } 1335 } 1336 return (1); 1337 } 1338 #endif 1339 1340 int 1341 fdcswintr(arg) 1342 void *arg; 1343 { 1344 struct fdc_softc *fdc = arg; 1345 int s; 1346 1347 if (fdc->sc_istatus == FDC_ISTATUS_NONE) 1348 /* This (software) interrupt is not for us */ 1349 return (0); 1350 1351 switch (fdc->sc_istatus) { 1352 case FDC_ISTATUS_ERROR: 1353 printf("fdc: ierror status: state %d\n", fdc->sc_state); 1354 break; 1355 case FDC_ISTATUS_SPURIOUS: 1356 printf("fdc: spurious interrupt: state %d\n", fdc->sc_state); 1357 break; 1358 } 1359 1360 s = splbio(); 1361 fdcstate(fdc); 1362 splx(s); 1363 return (1); 1364 } 1365 1366 int 1367 fdcstate(fdc) 1368 struct fdc_softc *fdc; 1369 { 1370 #define st0 fdc->sc_status[0] 1371 #define st1 fdc->sc_status[1] 1372 #define cyl fdc->sc_status[1] 1373 #define FDC_WRFIFO(fdc, c) do { \ 1374 if (fdc_wrfifo(fdc, (c))) { \ 1375 goto xxx; \ 1376 } \ 1377 } while(0) 1378 1379 struct fd_softc *fd; 1380 struct buf *bp; 1381 int read, head, sec, nblks; 1382 struct fd_type *type; 1383 struct ne7_fd_formb *finfo = NULL; 1384 1385 if (fdc->sc_istatus == FDC_ISTATUS_ERROR) 1386 fdc->sc_state = DORESET; 1387 1388 /* Clear I task/status field */ 1389 fdc->sc_istatus = FDC_ISTATUS_NONE; 1390 fdc->sc_itask = FDC_ITASK_NONE; 1391 1392 loop: 1393 /* Is there a drive for the controller to do a transfer with? */ 1394 fd = fdc->sc_drives.tqh_first; 1395 if (fd == NULL) { 1396 fdc->sc_state = DEVIDLE; 1397 return (0); 1398 } 1399 1400 /* Is there a transfer to this drive? If not, deactivate drive. */ 1401 bp = fd->sc_q.b_actf; 1402 if (bp == NULL) { 1403 fd->sc_ops = 0; 1404 TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); 1405 fd->sc_q.b_active = 0; 1406 goto loop; 1407 } 1408 1409 if (bp->b_flags & B_FORMAT) 1410 finfo = (struct ne7_fd_formb *)bp->b_data; 1411 1412 switch (fdc->sc_state) { 1413 case DEVIDLE: 1414 fdc->sc_errors = 0; 1415 fd->sc_skip = 0; 1416 fd->sc_bcount = bp->b_bcount; 1417 fd->sc_blkno = (bp->b_blkno * DEV_BSIZE) / FD_BSIZE(fd); 1418 untimeout(fd_motor_off, fd); 1419 if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { 1420 fdc->sc_state = MOTORWAIT; 1421 return (1); 1422 } 1423 if ((fd->sc_flags & FD_MOTOR) == 0) { 1424 /* Turn on the motor, being careful about pairing. */ 1425 struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; 1426 if (ofd && ofd->sc_flags & FD_MOTOR) { 1427 untimeout(fd_motor_off, ofd); 1428 ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); 1429 } 1430 fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; 1431 fd_set_motor(fdc); 1432 fdc->sc_state = MOTORWAIT; 1433 if ((fdc->sc_flags & FDC_NEEDMOTORWAIT) != 0) { /*XXX*/ 1434 /* Allow .25s for motor to stabilize. */ 1435 timeout(fd_motor_on, fd, hz / 4); 1436 } else { 1437 fd->sc_flags &= ~FD_MOTOR_WAIT; 1438 goto loop; 1439 } 1440 return (1); 1441 } 1442 /* Make sure the right drive is selected. */ 1443 fd_set_motor(fdc); 1444 1445 /*FALLTHROUGH*/ 1446 case DOSEEK: 1447 doseek: 1448 if ((fdc->sc_flags & FDC_EIS) && 1449 (bp->b_flags & B_FORMAT) == 0) { 1450 fd->sc_cylin = bp->b_cylinder; 1451 /* We use implied seek */ 1452 goto doio; 1453 } 1454 1455 if (fd->sc_cylin == bp->b_cylinder) 1456 goto doio; 1457 1458 fd->sc_cylin = -1; 1459 fdc->sc_state = SEEKWAIT; 1460 fdc->sc_nstat = 0; 1461 1462 fd->sc_dk.dk_seek++; 1463 1464 disk_busy(&fd->sc_dk); 1465 timeout(fdctimeout, fdc, 4 * hz); 1466 1467 /* specify command */ 1468 FDC_WRFIFO(fdc, NE7CMD_SPECIFY); 1469 FDC_WRFIFO(fdc, fd->sc_type->steprate); 1470 /* XXX head load time == 6ms */ 1471 FDC_WRFIFO(fdc, 6 | NE7_SPECIFY_NODMA); 1472 1473 fdc->sc_itask = FDC_ITASK_SENSEI; 1474 /* seek function */ 1475 FDC_WRFIFO(fdc, NE7CMD_SEEK); 1476 FDC_WRFIFO(fdc, fd->sc_drive); /* drive number */ 1477 FDC_WRFIFO(fdc, bp->b_cylinder * fd->sc_type->step); 1478 return (1); 1479 1480 case DOIO: 1481 doio: 1482 if (finfo != NULL) 1483 fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - 1484 (char *)finfo; 1485 type = fd->sc_type; 1486 sec = fd->sc_blkno % type->seccyl; 1487 nblks = type->seccyl - sec; 1488 nblks = min(nblks, fd->sc_bcount / FD_BSIZE(fd)); 1489 nblks = min(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd)); 1490 fd->sc_nblks = nblks; 1491 fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FD_BSIZE(fd); 1492 head = sec / type->sectrac; 1493 sec -= head * type->sectrac; 1494 #ifdef DIAGNOSTIC 1495 {int block; 1496 block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; 1497 if (block != fd->sc_blkno) { 1498 printf("fdcintr: block %d != blkno %d\n", block, fd->sc_blkno); 1499 #ifdef DDB 1500 Debugger(); 1501 #endif 1502 }} 1503 #endif 1504 read = bp->b_flags & B_READ; 1505 1506 /* Setup for pseudo DMA */ 1507 fdc->sc_data = bp->b_data + fd->sc_skip; 1508 fdc->sc_tc = fd->sc_nbytes; 1509 1510 bus_space_write_1(fdc->sc_bustag, fdc->sc_handle, 1511 fdc->sc_reg_drs, type->rate); 1512 #ifdef FD_DEBUG 1513 if (fdc_debug > 1) 1514 printf("fdcstate: doio: %s drive %d " 1515 "track %d head %d sec %d nblks %d\n", 1516 finfo ? "format" : 1517 (read ? "read" : "write"), 1518 fd->sc_drive, fd->sc_cylin, head, sec, nblks); 1519 #endif 1520 fdc->sc_state = IOCOMPLETE; 1521 fdc->sc_itask = FDC_ITASK_DMA; 1522 fdc->sc_nstat = 0; 1523 1524 disk_busy(&fd->sc_dk); 1525 1526 /* allow 3 seconds for operation */ 1527 timeout(fdctimeout, fdc, 3 * hz); 1528 1529 if (finfo != NULL) { 1530 /* formatting */ 1531 FDC_WRFIFO(fdc, NE7CMD_FORMAT); 1532 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1533 FDC_WRFIFO(fdc, finfo->fd_formb_secshift); 1534 FDC_WRFIFO(fdc, finfo->fd_formb_nsecs); 1535 FDC_WRFIFO(fdc, finfo->fd_formb_gaplen); 1536 FDC_WRFIFO(fdc, finfo->fd_formb_fillbyte); 1537 } else { 1538 if (read) 1539 FDC_WRFIFO(fdc, NE7CMD_READ); 1540 else 1541 FDC_WRFIFO(fdc, NE7CMD_WRITE); 1542 FDC_WRFIFO(fdc, (head << 2) | fd->sc_drive); 1543 FDC_WRFIFO(fdc, fd->sc_cylin); /*track*/ 1544 FDC_WRFIFO(fdc, head); 1545 FDC_WRFIFO(fdc, sec + 1); /*sector+1*/ 1546 FDC_WRFIFO(fdc, type->secsize);/*sector size*/ 1547 FDC_WRFIFO(fdc, type->sectrac);/*secs/track*/ 1548 FDC_WRFIFO(fdc, type->gap1); /*gap1 size*/ 1549 FDC_WRFIFO(fdc, type->datalen);/*data length*/ 1550 } 1551 1552 return (1); /* will return later */ 1553 1554 case SEEKWAIT: 1555 untimeout(fdctimeout, fdc); 1556 fdc->sc_state = SEEKCOMPLETE; 1557 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1558 /* allow 1/50 second for heads to settle */ 1559 timeout(fdcpseudointr, fdc, hz / 50); 1560 return (1); /* will return later */ 1561 } 1562 /*FALLTHROUGH*/ 1563 case SEEKCOMPLETE: 1564 disk_unbusy(&fd->sc_dk, 0); /* no data on seek */ 1565 1566 /* Make sure seek really happened. */ 1567 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || 1568 cyl != bp->b_cylinder * fd->sc_type->step) { 1569 #ifdef FD_DEBUG 1570 if (fdc_debug) 1571 fdcstatus(fdc, "seek failed"); 1572 #endif 1573 fdcretry(fdc); 1574 goto loop; 1575 } 1576 fd->sc_cylin = bp->b_cylinder; 1577 goto doio; 1578 1579 case IOTIMEDOUT: 1580 /* 1581 * Try to abort the I/O operation without resetting 1582 * the chip first. Poke TC and arrange to pick up 1583 * the timed out I/O command's status. 1584 */ 1585 fdc->sc_itask = FDC_ITASK_RESULT; 1586 fdc->sc_state = IOCLEANUPWAIT; 1587 fdc->sc_nstat = 0; 1588 /* 1/10 second should be enough */ 1589 timeout(fdctimeout, fdc, hz/10); 1590 FTC_FLIP; 1591 return (1); 1592 1593 case IOCLEANUPTIMEDOUT: 1594 case SEEKTIMEDOUT: 1595 case RECALTIMEDOUT: 1596 case RESETTIMEDOUT: 1597 fdcstatus(fdc, "timeout"); 1598 1599 /* All other timeouts always roll through to a chip reset */ 1600 fdcretry(fdc); 1601 1602 /* Force reset, no matter what fdcretry() says */ 1603 fdc->sc_state = DORESET; 1604 goto loop; 1605 1606 case IOCLEANUPWAIT: /* IO FAILED, cleanup succeeded */ 1607 untimeout(fdctimeout, fdc); 1608 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1609 fdcretry(fdc); 1610 goto loop; 1611 1612 case IOCOMPLETE: /* IO DONE, post-analyze */ 1613 untimeout(fdctimeout, fdc); 1614 1615 disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid)); 1616 1617 if (fdc->sc_nstat != 7 || st1 != 0 || 1618 ((st0 & 0xf8) != 0 && 1619 ((st0 & 0xf8) != 0x20 || (fdc->sc_cfg & CFG_EIS) == 0))) { 1620 #ifdef FD_DEBUG 1621 if (fdc_debug) { 1622 fdcstatus(fdc, 1623 bp->b_flags & B_READ 1624 ? "read failed" : "write failed"); 1625 printf("blkno %d nblks %d nstat %d tc %d\n", 1626 fd->sc_blkno, fd->sc_nblks, 1627 fdc->sc_nstat, fdc->sc_tc); 1628 } 1629 #endif 1630 if (fdc->sc_nstat == 7 && 1631 (st1 & ST1_OVERRUN) == ST1_OVERRUN) { 1632 1633 /* 1634 * Silently retry overruns if no other 1635 * error bit is set. Adjust threshold. 1636 */ 1637 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1638 if (thr < 15) { 1639 thr++; 1640 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1641 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1642 #ifdef FD_DEBUG 1643 if (fdc_debug) 1644 printf("fdc: %d -> threshold\n", thr); 1645 #endif 1646 fdconf(fdc); 1647 fdc->sc_overruns = 0; 1648 } 1649 if (++fdc->sc_overruns < 3) { 1650 fdc->sc_state = DOIO; 1651 goto loop; 1652 } 1653 } 1654 fdcretry(fdc); 1655 goto loop; 1656 } 1657 if (fdc->sc_errors) { 1658 diskerr(bp, "fd", "soft error", LOG_PRINTF, 1659 fd->sc_skip / FD_BSIZE(fd), 1660 (struct disklabel *)NULL); 1661 printf("\n"); 1662 fdc->sc_errors = 0; 1663 } else { 1664 if (--fdc->sc_overruns < -20) { 1665 int thr = fdc->sc_cfg & CFG_THRHLD_MASK; 1666 if (thr > 0) { 1667 thr--; 1668 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 1669 fdc->sc_cfg |= (thr & CFG_THRHLD_MASK); 1670 #ifdef FD_DEBUG 1671 if (fdc_debug) 1672 printf("fdc: %d -> threshold\n", thr); 1673 #endif 1674 fdconf(fdc); 1675 } 1676 fdc->sc_overruns = 0; 1677 } 1678 } 1679 fd->sc_blkno += fd->sc_nblks; 1680 fd->sc_skip += fd->sc_nbytes; 1681 fd->sc_bcount -= fd->sc_nbytes; 1682 if (finfo == NULL && fd->sc_bcount > 0) { 1683 bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; 1684 goto doseek; 1685 } 1686 fdfinish(fd, bp); 1687 goto loop; 1688 1689 case DORESET: 1690 /* try a reset, keep motor on */ 1691 fd_set_motor(fdc); 1692 delay(100); 1693 fdc->sc_nstat = 0; 1694 fdc->sc_itask = FDC_ITASK_SENSEI; 1695 fdc->sc_state = RESETCOMPLETE; 1696 timeout(fdctimeout, fdc, hz / 2); 1697 fdc_reset(fdc); 1698 return (1); /* will return later */ 1699 1700 case RESETCOMPLETE: 1701 untimeout(fdctimeout, fdc); 1702 fdconf(fdc); 1703 1704 /* FALLTHROUGH */ 1705 case DORECAL: 1706 fdc->sc_state = RECALWAIT; 1707 fdc->sc_itask = FDC_ITASK_SENSEI; 1708 fdc->sc_nstat = 0; 1709 timeout(fdctimeout, fdc, 5 * hz); 1710 /* recalibrate function */ 1711 FDC_WRFIFO(fdc, NE7CMD_RECAL); 1712 FDC_WRFIFO(fdc, fd->sc_drive); 1713 return (1); /* will return later */ 1714 1715 case RECALWAIT: 1716 untimeout(fdctimeout, fdc); 1717 fdc->sc_state = RECALCOMPLETE; 1718 if (fdc->sc_flags & FDC_NEEDHEADSETTLE) { 1719 /* allow 1/30 second for heads to settle */ 1720 timeout(fdcpseudointr, fdc, hz / 30); 1721 return (1); /* will return later */ 1722 } 1723 1724 case RECALCOMPLETE: 1725 if (fdc->sc_nstat != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { 1726 #ifdef FD_DEBUG 1727 if (fdc_debug) 1728 fdcstatus(fdc, "recalibrate failed"); 1729 #endif 1730 fdcretry(fdc); 1731 goto loop; 1732 } 1733 fd->sc_cylin = 0; 1734 goto doseek; 1735 1736 case MOTORWAIT: 1737 if (fd->sc_flags & FD_MOTOR_WAIT) 1738 return (1); /* time's not up yet */ 1739 goto doseek; 1740 1741 default: 1742 fdcstatus(fdc, "stray interrupt"); 1743 return (1); 1744 } 1745 #ifdef DIAGNOSTIC 1746 panic("fdcintr: impossible"); 1747 #endif 1748 1749 xxx: 1750 /* 1751 * We get here if the chip locks up in FDC_WRFIFO() 1752 * Cancel any operation and schedule a reset 1753 */ 1754 untimeout(fdctimeout, fdc); 1755 fdcretry(fdc); 1756 (fdc)->sc_state = DORESET; 1757 goto loop; 1758 1759 #undef st0 1760 #undef st1 1761 #undef cyl 1762 } 1763 1764 void 1765 fdcretry(fdc) 1766 struct fdc_softc *fdc; 1767 { 1768 struct fd_softc *fd; 1769 struct buf *bp; 1770 int error = EIO; 1771 1772 fd = fdc->sc_drives.tqh_first; 1773 bp = fd->sc_q.b_actf; 1774 1775 fdc->sc_overruns = 0; 1776 if (fd->sc_opts & FDOPT_NORETRY) 1777 goto fail; 1778 1779 switch (fdc->sc_errors) { 1780 case 0: 1781 if (fdc->sc_nstat == 7 && 1782 (fdc->sc_status[0] & 0xd8) == 0x40 && 1783 (fdc->sc_status[1] & 0x2) == 0x2) { 1784 printf("%s: read-only medium\n", fd->sc_dv.dv_xname); 1785 error = EROFS; 1786 goto failsilent; 1787 } 1788 /* try again */ 1789 fdc->sc_state = 1790 (fdc->sc_flags & FDC_EIS) ? DOIO : DOSEEK; 1791 break; 1792 1793 case 1: case 2: case 3: 1794 /* didn't work; try recalibrating */ 1795 fdc->sc_state = DORECAL; 1796 break; 1797 1798 case 4: 1799 if (fdc->sc_nstat == 7 && 1800 fdc->sc_status[0] == 0 && 1801 fdc->sc_status[1] == 0 && 1802 fdc->sc_status[2] == 0) { 1803 /* 1804 * We've retried a few times and we've got 1805 * valid status and all three status bytes 1806 * are zero. Assume this condition is the 1807 * result of no disk loaded into the drive. 1808 */ 1809 printf("%s: no medium?\n", fd->sc_dv.dv_xname); 1810 error = ENODEV; 1811 goto failsilent; 1812 } 1813 1814 /* still no go; reset the bastard */ 1815 fdc->sc_state = DORESET; 1816 break; 1817 1818 default: 1819 fail: 1820 if ((fd->sc_opts & FDOPT_SILENT) == 0) { 1821 diskerr(bp, "fd", "hard error", LOG_PRINTF, 1822 fd->sc_skip / FD_BSIZE(fd), 1823 (struct disklabel *)NULL); 1824 printf("\n"); 1825 fdcstatus(fdc, "controller status"); 1826 } 1827 1828 failsilent: 1829 bp->b_flags |= B_ERROR; 1830 bp->b_error = error; 1831 fdfinish(fd, bp); 1832 } 1833 fdc->sc_errors++; 1834 } 1835 1836 int 1837 fdsize(dev) 1838 dev_t dev; 1839 { 1840 1841 /* Swapping to floppies would not make sense. */ 1842 return (-1); 1843 } 1844 1845 int 1846 fddump(dev, blkno, va, size) 1847 dev_t dev; 1848 daddr_t blkno; 1849 caddr_t va; 1850 size_t size; 1851 { 1852 1853 /* Not implemented. */ 1854 return (EINVAL); 1855 } 1856 1857 int 1858 fdioctl(dev, cmd, addr, flag, p) 1859 dev_t dev; 1860 u_long cmd; 1861 caddr_t addr; 1862 int flag; 1863 struct proc *p; 1864 { 1865 struct fd_softc *fd; 1866 struct fdc_softc *fdc; 1867 struct fdformat_parms *form_parms; 1868 struct fdformat_cmd *form_cmd; 1869 struct ne7_fd_formb fd_formb; 1870 int il[FD_MAX_NSEC + 1]; 1871 int unit; 1872 int i, j; 1873 int error; 1874 1875 unit = FDUNIT(dev); 1876 if (unit >= fd_cd.cd_ndevs) 1877 return (ENXIO); 1878 1879 fd = fd_cd.cd_devs[FDUNIT(dev)]; 1880 fdc = (struct fdc_softc *)fd->sc_dv.dv_parent; 1881 1882 switch (cmd) { 1883 case DIOCGDINFO: 1884 *(struct disklabel *)addr = *(fd->sc_dk.dk_label); 1885 return 0; 1886 1887 case DIOCWLABEL: 1888 if ((flag & FWRITE) == 0) 1889 return EBADF; 1890 /* XXX do something */ 1891 return (0); 1892 1893 case DIOCWDINFO: 1894 if ((flag & FWRITE) == 0) 1895 return (EBADF); 1896 1897 error = setdisklabel(fd->sc_dk.dk_label, 1898 (struct disklabel *)addr, 0, 1899 fd->sc_dk.dk_cpulabel); 1900 if (error) 1901 return (error); 1902 1903 error = writedisklabel(dev, fdstrategy, 1904 fd->sc_dk.dk_label, 1905 fd->sc_dk.dk_cpulabel); 1906 return (error); 1907 1908 case DIOCLOCK: 1909 /* 1910 * Nothing to do here, really. 1911 */ 1912 return (0); 1913 1914 case DIOCEJECT: 1915 if (*(int *)addr == 0) { 1916 int part = DISKPART(dev); 1917 /* 1918 * Don't force eject: check that we are the only 1919 * partition open. If so, unlock it. 1920 */ 1921 if ((fd->sc_dk.dk_openmask & ~(1 << part)) != 0 || 1922 fd->sc_dk.dk_bopenmask + fd->sc_dk.dk_copenmask != 1923 fd->sc_dk.dk_openmask) { 1924 return (EBUSY); 1925 } 1926 } 1927 /* FALLTHROUGH */ 1928 case ODIOCEJECT: 1929 fd_do_eject(fd); 1930 return (0); 1931 1932 case FDIOCGETFORMAT: 1933 form_parms = (struct fdformat_parms *)addr; 1934 form_parms->fdformat_version = FDFORMAT_VERSION; 1935 form_parms->nbps = 128 * (1 << fd->sc_type->secsize); 1936 form_parms->ncyl = fd->sc_type->cylinders; 1937 form_parms->nspt = fd->sc_type->sectrac; 1938 form_parms->ntrk = fd->sc_type->heads; 1939 form_parms->stepspercyl = fd->sc_type->step; 1940 form_parms->gaplen = fd->sc_type->gap2; 1941 form_parms->fillbyte = fd->sc_type->fillbyte; 1942 form_parms->interleave = fd->sc_type->interleave; 1943 switch (fd->sc_type->rate) { 1944 case FDC_500KBPS: 1945 form_parms->xfer_rate = 500 * 1024; 1946 break; 1947 case FDC_300KBPS: 1948 form_parms->xfer_rate = 300 * 1024; 1949 break; 1950 case FDC_250KBPS: 1951 form_parms->xfer_rate = 250 * 1024; 1952 break; 1953 default: 1954 return (EINVAL); 1955 } 1956 return (0); 1957 1958 case FDIOCSETFORMAT: 1959 if ((flag & FWRITE) == 0) 1960 return (EBADF); /* must be opened for writing */ 1961 1962 form_parms = (struct fdformat_parms *)addr; 1963 if (form_parms->fdformat_version != FDFORMAT_VERSION) 1964 return (EINVAL);/* wrong version of formatting prog */ 1965 1966 i = form_parms->nbps >> 7; 1967 if ((form_parms->nbps & 0x7f) || ffs(i) == 0 || 1968 i & ~(1 << (ffs(i)-1))) 1969 /* not a power-of-two multiple of 128 */ 1970 return (EINVAL); 1971 1972 switch (form_parms->xfer_rate) { 1973 case 500 * 1024: 1974 fd->sc_type->rate = FDC_500KBPS; 1975 break; 1976 case 300 * 1024: 1977 fd->sc_type->rate = FDC_300KBPS; 1978 break; 1979 case 250 * 1024: 1980 fd->sc_type->rate = FDC_250KBPS; 1981 break; 1982 default: 1983 return (EINVAL); 1984 } 1985 1986 if (form_parms->nspt > FD_MAX_NSEC || 1987 form_parms->fillbyte > 0xff || 1988 form_parms->interleave > 0xff) 1989 return EINVAL; 1990 fd->sc_type->sectrac = form_parms->nspt; 1991 if (form_parms->ntrk != 2 && form_parms->ntrk != 1) 1992 return EINVAL; 1993 fd->sc_type->heads = form_parms->ntrk; 1994 fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; 1995 fd->sc_type->secsize = ffs(i)-1; 1996 fd->sc_type->gap2 = form_parms->gaplen; 1997 fd->sc_type->cylinders = form_parms->ncyl; 1998 fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * 1999 form_parms->nbps / DEV_BSIZE; 2000 fd->sc_type->step = form_parms->stepspercyl; 2001 fd->sc_type->fillbyte = form_parms->fillbyte; 2002 fd->sc_type->interleave = form_parms->interleave; 2003 return (0); 2004 2005 case FDIOCFORMAT_TRACK: 2006 if((flag & FWRITE) == 0) 2007 /* must be opened for writing */ 2008 return (EBADF); 2009 form_cmd = (struct fdformat_cmd *)addr; 2010 if (form_cmd->formatcmd_version != FDFORMAT_VERSION) 2011 /* wrong version of formatting prog */ 2012 return (EINVAL); 2013 2014 if (form_cmd->head >= fd->sc_type->heads || 2015 form_cmd->cylinder >= fd->sc_type->cylinders) { 2016 return (EINVAL); 2017 } 2018 2019 fd_formb.head = form_cmd->head; 2020 fd_formb.cyl = form_cmd->cylinder; 2021 fd_formb.transfer_rate = fd->sc_type->rate; 2022 fd_formb.fd_formb_secshift = fd->sc_type->secsize; 2023 fd_formb.fd_formb_nsecs = fd->sc_type->sectrac; 2024 fd_formb.fd_formb_gaplen = fd->sc_type->gap2; 2025 fd_formb.fd_formb_fillbyte = fd->sc_type->fillbyte; 2026 2027 bzero(il, sizeof il); 2028 for (j = 0, i = 1; i <= fd_formb.fd_formb_nsecs; i++) { 2029 while (il[(j%fd_formb.fd_formb_nsecs) + 1]) 2030 j++; 2031 il[(j%fd_formb.fd_formb_nsecs) + 1] = i; 2032 j += fd->sc_type->interleave; 2033 } 2034 for (i = 0; i < fd_formb.fd_formb_nsecs; i++) { 2035 fd_formb.fd_formb_cylno(i) = form_cmd->cylinder; 2036 fd_formb.fd_formb_headno(i) = form_cmd->head; 2037 fd_formb.fd_formb_secno(i) = il[i+1]; 2038 fd_formb.fd_formb_secsize(i) = fd->sc_type->secsize; 2039 } 2040 2041 return fdformat(dev, &fd_formb, p); 2042 2043 case FDIOCGETOPTS: /* get drive options */ 2044 *(int *)addr = fd->sc_opts; 2045 return (0); 2046 2047 case FDIOCSETOPTS: /* set drive options */ 2048 fd->sc_opts = *(int *)addr; 2049 return (0); 2050 2051 #ifdef FD_DEBUG 2052 case _IO('f', 100): 2053 fdc_wrfifo(fdc, NE7CMD_DUMPREG); 2054 fdcresult(fdc); 2055 printf("fdc: dumpreg(%d regs): <", fdc->sc_nstat); 2056 for (i = 0; i < fdc->sc_nstat; i++) 2057 printf(" 0x%x", fdc->sc_status[i]); 2058 printf(">\n"); 2059 return (0); 2060 2061 case _IOW('f', 101, int): 2062 fdc->sc_cfg &= ~CFG_THRHLD_MASK; 2063 fdc->sc_cfg |= (*(int *)addr & CFG_THRHLD_MASK); 2064 fdconf(fdc); 2065 return (0); 2066 2067 case _IO('f', 102): 2068 fdc_wrfifo(fdc, NE7CMD_SENSEI); 2069 fdcresult(fdc); 2070 printf("fdc: sensei(%d regs): <", fdc->sc_nstat); 2071 for (i=0; i< fdc->sc_nstat; i++) 2072 printf(" 0x%x", fdc->sc_status[i]); 2073 printf(">\n"); 2074 return (0); 2075 #endif 2076 default: 2077 return (ENOTTY); 2078 } 2079 2080 #ifdef DIAGNOSTIC 2081 panic("fdioctl: impossible"); 2082 #endif 2083 } 2084 2085 int 2086 fdformat(dev, finfo, p) 2087 dev_t dev; 2088 struct ne7_fd_formb *finfo; 2089 struct proc *p; 2090 { 2091 int rv = 0, s; 2092 struct fd_softc *fd = fd_cd.cd_devs[FDUNIT(dev)]; 2093 struct fd_type *type = fd->sc_type; 2094 struct buf *bp; 2095 2096 /* set up a buffer header for fdstrategy() */ 2097 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 2098 if (bp == 0) 2099 return (ENOBUFS); 2100 2101 PHOLD(p); 2102 bzero((void *)bp, sizeof(struct buf)); 2103 bp->b_flags = B_BUSY | B_PHYS | B_FORMAT; 2104 bp->b_proc = p; 2105 bp->b_dev = dev; 2106 2107 /* 2108 * Calculate a fake blkno, so fdstrategy() would initiate a 2109 * seek to the requested cylinder. 2110 */ 2111 bp->b_blkno = ((finfo->cyl * (type->sectrac * type->heads) 2112 + finfo->head * type->sectrac) * FD_BSIZE(fd)) 2113 / DEV_BSIZE; 2114 2115 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2116 bp->b_data = (caddr_t)finfo; 2117 2118 #ifdef FD_DEBUG 2119 if (fdc_debug) { 2120 int i; 2121 2122 printf("fdformat: blkno 0x%x count %ld\n", 2123 bp->b_blkno, bp->b_bcount); 2124 2125 printf("\tcyl:\t%d\n", finfo->cyl); 2126 printf("\thead:\t%d\n", finfo->head); 2127 printf("\tnsecs:\t%d\n", finfo->fd_formb_nsecs); 2128 printf("\tsshft:\t%d\n", finfo->fd_formb_secshift); 2129 printf("\tgaplen:\t%d\n", finfo->fd_formb_gaplen); 2130 printf("\ttrack data:"); 2131 for (i = 0; i < finfo->fd_formb_nsecs; i++) { 2132 printf(" [c%d h%d s%d]", 2133 finfo->fd_formb_cylno(i), 2134 finfo->fd_formb_headno(i), 2135 finfo->fd_formb_secno(i) ); 2136 if (finfo->fd_formb_secsize(i) != 2) 2137 printf("<sz:%d>", finfo->fd_formb_secsize(i)); 2138 } 2139 printf("\n"); 2140 } 2141 #endif 2142 2143 /* now do the format */ 2144 fdstrategy(bp); 2145 2146 /* ...and wait for it to complete */ 2147 s = splbio(); 2148 while (!(bp->b_flags & B_DONE)) { 2149 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2150 if (rv == EWOULDBLOCK) 2151 break; 2152 } 2153 splx(s); 2154 2155 if (rv == EWOULDBLOCK) { 2156 /* timed out */ 2157 rv = EIO; 2158 biodone(bp); 2159 } 2160 if (bp->b_flags & B_ERROR) { 2161 rv = bp->b_error; 2162 } 2163 PRELE(p); 2164 free(bp, M_TEMP); 2165 return (rv); 2166 } 2167 2168 void 2169 fdgetdisklabel(dev) 2170 dev_t dev; 2171 { 2172 int unit = FDUNIT(dev), i; 2173 struct fd_softc *fd = fd_cd.cd_devs[unit]; 2174 struct disklabel *lp = fd->sc_dk.dk_label; 2175 struct cpu_disklabel *clp = fd->sc_dk.dk_cpulabel; 2176 2177 bzero(lp, sizeof(struct disklabel)); 2178 bzero(lp, sizeof(struct cpu_disklabel)); 2179 2180 lp->d_type = DTYPE_FLOPPY; 2181 lp->d_secsize = FD_BSIZE(fd); 2182 lp->d_secpercyl = fd->sc_type->seccyl; 2183 lp->d_nsectors = fd->sc_type->sectrac; 2184 lp->d_ncylinders = fd->sc_type->cylinders; 2185 lp->d_ntracks = fd->sc_type->heads; /* Go figure... */ 2186 lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; 2187 lp->d_rpm = 3600; /* XXX like it matters... */ 2188 2189 strncpy(lp->d_typename, "floppy", sizeof(lp->d_typename)); 2190 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2191 lp->d_interleave = 1; 2192 2193 lp->d_partitions[RAW_PART].p_offset = 0; 2194 lp->d_partitions[RAW_PART].p_size = lp->d_secpercyl * lp->d_ncylinders; 2195 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2196 lp->d_npartitions = RAW_PART + 1; 2197 2198 lp->d_magic = DISKMAGIC; 2199 lp->d_magic2 = DISKMAGIC; 2200 lp->d_checksum = dkcksum(lp); 2201 2202 /* 2203 * Call the generic disklabel extraction routine. If there's 2204 * not a label there, fake it. 2205 */ 2206 if (readdisklabel(dev, fdstrategy, lp, clp) != NULL) { 2207 strncpy(lp->d_packname, "default label", 2208 sizeof(lp->d_packname)); 2209 /* 2210 * Reset the partition info; it might have gotten 2211 * trashed in readdisklabel(). 2212 * 2213 * XXX Why do we have to do this? readdisklabel() 2214 * should be safe... 2215 */ 2216 for (i = 0; i < MAXPARTITIONS; ++i) { 2217 lp->d_partitions[i].p_offset = 0; 2218 if (i == RAW_PART) { 2219 lp->d_partitions[i].p_size = 2220 lp->d_secpercyl * lp->d_ncylinders; 2221 lp->d_partitions[i].p_fstype = FS_BSDFFS; 2222 } else { 2223 lp->d_partitions[i].p_size = 0; 2224 lp->d_partitions[i].p_fstype = FS_UNUSED; 2225 } 2226 } 2227 lp->d_npartitions = RAW_PART + 1; 2228 } 2229 } 2230 2231 void 2232 fd_do_eject(fd) 2233 struct fd_softc *fd; 2234 { 2235 struct fdc_softc *fdc = (void *)fd->sc_dv.dv_parent; 2236 2237 if (CPU_ISSUN4C) { 2238 auxregbisc(AUXIO4C_FDS, AUXIO4C_FEJ); 2239 delay(10); 2240 auxregbisc(AUXIO4C_FEJ, AUXIO4C_FDS); 2241 return; 2242 } 2243 if (CPU_ISSUN4M && (fdc->sc_flags & FDC_82077) != 0) { 2244 bus_space_tag_t t = fdc->sc_bustag; 2245 bus_space_handle_t h = fdc->sc_handle; 2246 u_int8_t dor = FDO_FRST | FDO_FDMAEN | FDO_MOEN(0); 2247 2248 bus_space_write_1(t, h, fdc->sc_reg_dor, dor | FDO_EJ); 2249 delay(10); 2250 bus_space_write_1(t, h, fdc->sc_reg_dor, FDO_FRST | FDO_DS); 2251 return; 2252 } 2253 } 2254 2255 #ifdef MEMORY_DISK_HOOKS 2256 int fd_read_md_image __P((size_t *, caddr_t *)); 2257 #endif 2258 2259 /* ARGSUSED */ 2260 void 2261 fd_mountroot_hook(dev) 2262 struct device *dev; 2263 { 2264 int c; 2265 2266 fd_do_eject((struct fd_softc *)dev); 2267 printf("Insert filesystem floppy and press return."); 2268 for (;;) { 2269 c = cngetc(); 2270 if ((c == '\r') || (c == '\n')) { 2271 printf("\n"); 2272 break; 2273 } 2274 } 2275 } 2276 2277 #ifdef MEMORY_DISK_HOOKS 2278 2279 #define FDMICROROOTSIZE ((2*18*80) << DEV_BSHIFT) 2280 2281 int 2282 fd_read_md_image(sizep, addrp) 2283 size_t *sizep; 2284 caddr_t *addrp; 2285 { 2286 struct buf buf, *bp = &buf; 2287 dev_t dev; 2288 off_t offset; 2289 caddr_t addr; 2290 2291 dev = makedev(54,0); /* XXX */ 2292 2293 MALLOC(addr, caddr_t, FDMICROROOTSIZE, M_DEVBUF, M_WAITOK); 2294 *addrp = addr; 2295 2296 if (fdopen(dev, 0, S_IFCHR, NULL)) 2297 panic("fd: mountroot: fdopen"); 2298 2299 offset = 0; 2300 2301 for (;;) { 2302 bp->b_dev = dev; 2303 bp->b_error = 0; 2304 bp->b_resid = 0; 2305 bp->b_proc = NULL; 2306 bp->b_flags = B_BUSY | B_PHYS | B_RAW | B_READ; 2307 bp->b_blkno = btodb(offset); 2308 bp->b_bcount = DEV_BSIZE; 2309 bp->b_data = addr; 2310 fdstrategy(bp); 2311 while ((bp->b_flags & B_DONE) == 0) { 2312 tsleep((caddr_t)bp, PRIBIO + 1, "physio", 0); 2313 } 2314 if (bp->b_error) 2315 panic("fd: mountroot: fdread error %d", bp->b_error); 2316 2317 if (bp->b_resid != 0) 2318 break; 2319 2320 addr += DEV_BSIZE; 2321 offset += DEV_BSIZE; 2322 if (offset + DEV_BSIZE > FDMICROROOTSIZE) 2323 break; 2324 } 2325 (void)fdclose(dev, 0, S_IFCHR, NULL); 2326 *sizep = offset; 2327 fd_do_eject(fd_cd.cd_devs[FDUNIT(dev)]); 2328 return (0); 2329 } 2330 #endif 2331
Indexes created Fri Oct 03 02:09:57 GMT 2025